<template>
  <div>
    <!--面包屑导航区域-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!--卡片视图区域-->
    <el-card>
        <!--搜索与添加区域-->
        <el-row :gutter="20">
            <el-col :span="9">
                <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                    <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                </el-input>
            </el-col>
            <el-col :span="4">
                <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
            </el-col>
        </el-row>
        <!--用户列表区域-->
        <el-table :data="userlist" border stripe>
            <el-table-column label="#" type="index"></el-table-column>
            <el-table-column label="姓名" prop="username"></el-table-column>
            <el-table-column label="邮箱" prop="email"></el-table-column>
            <el-table-column label="电话" prop="mobile"></el-table-column>
            <el-table-column label="角色" prop="role_name"></el-table-column>
            <el-table-column label="状态">
                <template slot-scope="scope">
                    <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                    </el-switch>
                </template>
            </el-table-column>
            <el-table-column label="操作" width="190px">
                <template slot-scope="scope">
                    <el-tooltip effect="dark" content="修改" placement="top" :enterable="false">
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                    </el-tooltip>
                    <el-tooltip effect="dark" content="删除" placement="top" :enterable="false">
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                    </el-tooltip>
                    <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                        <!--分配角色-->
                        <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                    </el-tooltip>
                </template>
            </el-table-column>
        </el-table>
        <!--分页区域-->
        <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[1, 2, 5, 10]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
        </el-pagination>
    </el-card>
    <!--添加用户的对话框-->
    <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%"
        @close="addDialogClosed">
        <!--内容主体区域-->
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
            <el-form-item label="用户名" prop="username">
                <el-input v-model="addForm.username"></el-input>
            </el-form-item>
            <el-form-item label="密码" prop="password">
                <el-input v-model="addForm.password"></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="addForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
                <el-input v-model="addForm.mobile"></el-input>
            </el-form-item>
        </el-form>
        <!--底部区域-->
        <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
    </el-dialog>
    <!--修改用户的对话框-->
    <el-dialog
        title="修改用户"
        :visible.sync="editDialogVisible"
        width="50%"
        @close="editDialogClosed">
        <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
            <el-form-item label="用户名">
                <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="editForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
                <el-input v-model="editForm.mobile"></el-input>
            </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editUserInfo">确 定</el-button>
        </span>
    </el-dialog>
    <!--分配角色对话框-->
    <el-dialog
        title="分配角色"
        :visible.sync="setRoleDialogVisible"
        width="50%" @close="setRoleDialogClosed">
        <div>
            <p>当前的用户: {{userInfo.username}}</p>
            <p>当前的角色: {{userInfo.role_name}}</p>
            <p>分配新角色: 
                <el-select v-model="selectRoleId" placeholder="请选择">
                    <el-option
                    v-for="item in rolesList"
                    :key="item.id"
                    :label="item.roleName"
                    :value="item.id">
                    </el-option>
                </el-select>
            </p>
        </div>
        <span slot="footer" class="dialog-footer">
            <el-button @click="setRoleDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
        </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: 'UsersPage',
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
        const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

        if(regEmail.test(value)){
            // 合法
            return cb()
        }else{
            cb(new Error('请输入合法的邮箱'))
        }
    }
    // 验证手机号的规则
    var checkMobile = (rule, value, cb) => {
        const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

        if(regMobile.test(value)){
            // 合法
            return cb()
        }else{
            cb(new Error('请输入合法的手机号'))
        }
    }
    return {
        // 获取用户列表的参数对象
        queryInfo: {
            query: '',
            pagenum: 1,// 当前页数
            pagesize: 2
        },
        userlist: [],
        total: 0,
        addDialogVisible: false,// 控制添加用户对话框的显示与隐藏
        editDialogVisible: false,// 控制修改用户对话框的显示与隐藏
        setRoleDialogVisible: false,// 控制分配角色对话框的显示与隐藏
        userInfo: {},// 需要被分配角色的用户
        rolesList: [],
        selectRoleId: '',
        // 添加用户的表单数据
        addForm: {
            username: '',
            password: '',
            email: '',
            mobile: ''
        },
        editForm: {},
        editFormRules: {
            email: [
                {required: true, message: '请输入邮箱', trigger: 'blur'},
                {validator: checkEmail, trigger: 'blur'}
            ],
            mobile: [
                {required: true, message: '请输入手机', trigger: 'blur'},
                {validator: checkMobile, trigger: 'blur'}
            ]
        },
        // 添加表单的验证规则对象
        addFormRules: {
            username: [
                {required: true, message: '请输入用户名', trigger: 'blur'},
                {min: 3, max: 10, message: '用户名的长度在3到10个字符之间', trigger: 'blur'}
            ],
            password: [
                {required: true, message: '请输入密码', trigger: 'blur'},
                {min: 6, max: 15, message: '密码的长度在6到15个字符之间', trigger: 'blur'}
            ],
            email: [
                {required: true, message: '请输入邮箱', trigger: 'blur'},
                {validator: checkEmail, trigger: 'blur'}
            ],
            mobile: [
                {required: true, message: '请输入手机', trigger: 'blur'},
                {validator: checkMobile, trigger: 'blur'}
            ]
        }
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList(){
        const {data: res} = await this.$http.get('users', {params: this.queryInfo})
        if(res.meta.status !== 200){
            return this.$message.error('获取用户列表失败')
        }else{
            this.userlist = res.data.users
            this.total = res.data.total
        }
    },
    handleSizeChange(newsize) {
        // pagesize改变
        this.queryInfo.pagesize = newsize
        this.getUserList()
    },
    handleCurrentChange(newpage){
        // 页码值改变
        this.queryInfo.pagenum = newpage
        this.getUserList()
    },
    async userStateChanged(userinfo){
        // 监听switch开关的改变
        console.log(userinfo.mg_state)
        const {data: res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
        if(res.meta.status !== 200){
            userinfo.mg_state = !userinfo.mg_state
            return this.$message.error("更新用户状态失败")
        }else{
            this.$message.success("更新用户状态成功")
        }
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed(){
        this.$refs.addFormRef.resetFields()
    },
    // 添加用户
    addUser(){
        this.$refs.addFormRef.validate(async valid => {
            if(!valid){
                return;
            }else{
                const {data: res} = await this.$http.post('users', this.addForm)
                if(res.meta.status !== 201){
                    this.$message.error('添加用户失败')
                }else{
                    this.$message.success('添加用户成功')
                    this.addDialogVisible = false
                    this.getUserList()
                }
            }
        })
    },
    // 展示编辑用户的对话框
    async showEditDialog(id){
        const {data: res} = await this.$http.get('/users/'+id)
        if(res.meta.status !== 200){
            return this.$message.error('查询用户数据失败')
        }else{
            this.editForm = res.data
        }
       
        this.editDialogVisible = true
    },

    // 监听修改对话框的关闭事件
    editDialogClosed(){
        this.$refs.editFormRef.resetFields()
    },

    // 修改用户并提交
    editUserInfo(){
        this.$refs.editFormRef.validate(async valid => {
            if(!valid){
                return
            }else{
                const {data: res} = await this.$http.put('users/'+this.editForm.id, {
                    email: this.editForm.email,
                    mobile: this.editForm.mobile
                })
                if(res.meta.status !== 200){
                    return this.$message.error('更新用户信息失败')
                }else{
                    this.editDialogVisible = false
                    this.getUserList()
                    this.$message.success('更新用户信息成功')
                }
            }
        })
    },
    // 根据id删除用户信息
    async removeUserById(id){
        // 弹框询问
        const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err); 
        // 如果用户确认删除，则返回值为 confirm,取消删除则返回cancel
        if(confirmResult !== 'confirm'){
            return this.$message.info('已经取消删除')
        }         
        const {data: res} = await this.$http.delete('users/'+id)
        if(res.meta.status !== 200){
            return this.$message.error('删除用户失败')
        }else{
            this.$message.success('删除用户成功')
            this.getUserList()
        }
    },
    // 展示分配角色的对话框
    async setRole(userInfo){
        this.userInfo = userInfo
        // 获取所有的角色列表
        const {data: res} = await this.$http.get('roles')
        if(res.meta.status !== 200){
            return this.$message.error('获取角色列表失败')
        }else{
            this.rolesList = res.data
        }
        this.setRoleDialogVisible = true
    },
    // 分配角色按钮
    async saveRoleInfo(){
        if(!this.selectRoleId){
            return this.$message.error('请选择要分配的角色')
        }else{
            const {data: res} = await this.$http.put(`users/${this.userInfo.id}/role`,{
                rid: this.selectRoleId
            })

            if(res.meta.status !== 200){
                return this.$message.error(res.meta.msg)
            }else{
                this.$message.success('更新角色成功')
                this.getUserList()
                this.setRoleDialogVisible = false
            }
        }
    },
    setRoleDialogClosed(){
        this.selectRoleId = '',
        this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped>

</style>
